Failed Geant 4 Build

When building Geant4 on Visual Studio 2019 on the first attempt I had 28 failed. After reading another post on the forum I changed the Solution configurations from Debug to Release and now only received 1 failed.

Are there any other changes I need to make in order to receive 0 failures?

looks like you have the same issue as I did, downloading the extra data fails. what worked for me was


and download/extract the data manually

edit: missed the line break in the message, forget what is below:

looks like you try to install to C:/Program Files from a user that does not have write permission in that folder. try changing the install destination as described here:

cmake -DCMAKE_INSTALL_PREFIX="%HOMEPATH%\Geant4\geant4_10_07-install" ...

or if you use the cmake gui, find this option and change it :slight_smile:

Thank you! I will give this a try

Thank you that solution worked